Unmanned aerial vehicle



FIG. 1 is a front perspective view of an unmanned aerial vehicle according to the design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The portions shown in broken lines in FIG. 7 do not form part of the claimed design. 

CLAIM The ornamental design for an unmanned aerial vehicle, as shown and described. 